Spinning and twister frame



NOV,

. I 1,608,295 w. BESWICK SPINNING AND TWISTER FRAME Filed March 19, 1925 2 Sheets-Sheet 1 \Nlllmn;

mlllmllllmg INVENTOR.

Nov. 23 1926.

- w. BESWICK SPINNING AND TWISTER FRAME Filed March 19. 1925 2 Sheets-Sheet 2 ia [E3 g 2;

I N VEN TOR.

Z; ATTORNEY.

Patented Nov. 23, 1926.

. U IT STATES PATENT OFFICE.

WILLIAM BESWIOK, OF SACO, MAINE, ASSIGNOR TO SACO-LOWELL SHOPS, OF BOSTON, MASSACHUSETTS, A CORFORATION OF MASSACHUSETTS.

SPINNING AND 'rwrsrnn FRAME.

Application filed March 19, 1925. Serial No. 16,648.

This invention relates to spinning and twisting frames and is especially concerned independent sets of feed rolls.

with such machines when equipped for the include Such manufacture of yarns which bunches, knots, flakes, and the like.

yarns are widely 'usedin making a great' material in a spinning or twisting frame (hereinafter referred to as a twister frame), and running the strands through One set of said rolls is driven intermittently while the other is driven continuously. The result is that during the period of rest of one set of rolls, the strand or strands fed by the other set will be twisted around the strand fed by the first set. Sometimes this type of yarn is made by associating a roving with two or more strands of yarn, the yarn being fed continuously, while the roving is fed to'the feed rolls for the yarn through an intermittently operated set of rolls. The pull of the continuously driven rolls during the periods of rest of the intermittent rolls breaks the roving, with the result that it is fed to the yarn in bunches or flakes. This makes a yarn of irregular gage, and if the roving and yarn are of different colors it also produces a variegatedcolor efiect.

The present invention is especially con cerned with the mechanism for driving the rolls of a twister frame for the purpose of producing yarn of the general character above mentioned. The invention aims to devise a mechanism of this character which can be manufactured economically, can be quickly and easily applied to a twister frame,

and in which the making of changes re-.

spectively, of a portion of the driving chain shown in Fig. 1; and

Figs. 6, 7 and 8 are perspective views of.

details of the chain.

In the drawings, l'indicates the spindle, 2 the ring rail, 3 a ring, 4 the thread board, and 5 the drawing roll stand of a twister frame of a common commercial construction. The front drawing or'feed rolls are indicated at 6 and 7, respectively, the rear rolls at 8 and 9, respectively, and the bobbin stand at 10. All these parts are constructed, mounted and arranged in the usual manner. The lower front roll 7 is driven by the usual gearing, two of the driving gears being indicated diagrammatically at 30 and 31, Fig. 2. The upper roll 6 is driven simply through its contact with the lower roll. These rolls are driven 'continuously while the'machine is in operation.

The mechanism provided by this invention for intermittently driving the rear rolls comprises a gear 12 fast on an extension of the lower roll 9. The upper roll is driven by its contact with the lower roll.

.Mounted on the lower roll shaft 7 is a pinion 13 driving a gear 14 which rotates on a stub shaft 15 that projects inwardly from the end frame 16 of the machine. A sprocket wheel 17 rotates with the gear 14 and cooperates with another sprocket wheel 18 to support and drive a sprocket chain 19. This chain carries a series of toothed links 20 which arespaced toothed links 20 are made in the form of segmental blocks cut from a circle having a radius equivalent to that on which the links travel around the sprocket wheel 17.

The chain preferably has links of the keyhole slot type, as indicated at 22 in Figs. 4 to 6, connecting the toothed links 20 and the plain or solid links 23, all the links being connected together by pivot pins 24' having flattened portions near their opposite ends to enter the narrow parts of the slots 25, Fig. 6. By pushing any pin backwardly into the large part of the slot 25 the pin may then be driven out. This construction, therefore, permits the use of any desired number or spacing of the toothed links 20 in the chain.

In the arrangement shown in Fig. 1, two strands of yarn a and b are drawn from the bobbins A and B, respectively, pass through a thread guiding eye 26, and thence between the front feed rolls 6 and 7 to the bobbin on the spindle 1. ing a, Fig. 1, is drawn from any suitable supply, fed between the rear rolls 8 and 9 and thence passes between the forward rolls 6 and 7. As it travels from the rear to the front rolls it is-guided between the shank of the thread guide 26, Fig. 3, and a pin 27, both the pin and the thread guide being supported in a bar 28. This bar may conveniently consist of the usual traverse bar, but it is not traversed in the present machine. The front rolls 6 and 7 continuously feed the strands a and I) to the spindle 1 and the rear rolls 8 and 9, when they rotate, feed a length of roving 0 forward into the bite of the front rolls. As soon as the rear rolls stop, the pull of the front rolls on the roving breaks the roving at some point between the front and rear rolls. \Vhen the rear rolls start up again, another length of roving is fed toward the spindle and then is broken, these operations c0n tinuing so long as the machine remains 1n action. The result is that lengths of soft roving are twisted together with the strands a and 7) of yarn, thus producing a yarn hav- 1 ing flakes or bunches in it. The lengths of these bunches will be determined by the ratio of the gearing between the front and rear rolls and the lengths of the toothed links 20. The length of the intervals between bunches will be determined partly by the ratio of the gearing between the front and rear rolls, and partly by the spacing of thetoothed links 20 in the chain 19. Since the number and spacing of the toothed links in the chain can be varied at will, the charactor of the yarn produced can also be varied as desired.

Instead of associating a roving with the strands f6 and b, a single strand of yarn could be run through the guide 26 and the front rolls 6 and 7 in place of the yarns;

a and Z), and a second strand of yarn could be run through the rear rolls and over the upper front roll, joining the first strand at some point between the front rolls and the thread guide 28, Fig. 1. The result of this arrangement would be to form bunches by twisting the thread running through the front rolls around the thread. running through the rear rolls at intervals depending upon the intermittent feed of the rear A strand of rov-.

rolls. That is, so long as the two threads were fed together, a twisted yarn of uniform gage would be produced,- but when the rear rolls stopped, the thread fed by the front rollswould be twisted around the other thread in a bunch. Numerous other variations can be produced by this mechanism.

lit will now be appreciated that this invention provides a very simple form of intermittent drive for the rolls of a twister frame. Such a mechanism can be manufactured very economically and can be quickly applied to a twister frame, thus adapting it readily to the manufacture of the bunch or flake types of yarn. The ease with which the toothed links 20 can be ad'- yarn.

While I have shown and described the bezt embodiment of my invention that I have so far devised, it will be evident that the invention may be embodied in other forms without departing from the spirit or scope thereof. For example, I have shown only two sets of rolls, but it may be desirable under some circumstances to use an intermediate pair of rolls between the front and rear rolls, and to so proportion the speed of the sets of rolls that the roving or other material being fed through them will be drawn or drafted. Also, several toothed links may be arranged in adjoining relationship so as to turn the back rolls for a longer period between stops and thereby increase the length of the spaces between the bunches. These, and various other modifications, may be made without departing from the spirit or scope of the invention.

Having thus described my invention, what I desire to claim as new is 1. A machine of the character described comprising, in combination, a spindle, a plurality of sets of rolls for feeding strands of material to be twisted together toward said spindle, a gear for driving one set of said rolls, and a driving chain carrying toothed members spaced apart and arranged to engage the teeth of said gear to drive it intermittently.

2. A machine of the character described. comprising, in combination, a spindle, a plurality of sets of rolls for feeding strands of material to be twisted together toward said spindle, in gear for driving oneset of said rolls, a driving chain carrying segmental links having teeth to .engage the teeth of said gear to drive it intermittently, and a sprocket wheel for supporting said chain in operative relationship to said gear, gearing for continuously driving the other set of rolls, and driving connections between said sprocket wheel and said earing.

3. A. machine of the c aracter described comprising, in combination, a spindle, mechanism for feeding yarn toward said spindle 4. A machine of the character described comprising, in combination, a spindle, mechanism for feeding yarn toward said spindle comprising front and rear sets of rolls, yarn guiding means located between said front and rear rolls, gear mechanism for continuously driving the front set of rolls, a gear for driving the rear set of rolls, a sprocket vWheel mounted closely adjacent to the periphery of said gear, a chain driven by said sprocket wheel and carrying a plurality of segmental links each having teeth to engage the teeth of said gear and drive it intermittently, gear connections between said sprocket Wheel and'said front rolls for driving said Wheel, and another sprocket Wheel cooperating with the first sprocket-Wheel to support said chain.

5. A machine of the character described comprising, in combination, a spindle, a plurality of sets of rolls for feeding strands of material to be twisted together toward said spindle, a gear for driving one set of said rolls, and a driving member carrying a plurality of segmental blocks having teeth to engage the teeth of said gear to drive it in: termittently, said blocks being removably mounted on said member, and said member and said blocks being constructed to permit the mounting of said blocks in various numbers and spacings on said driving member and in operative relationship thereto.

WILLIAM BESWIoK. 

